Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
38
2
2002
Main Results of the Study of Zooplankton of the Northwestern Part of the Indian Ocean by the Institute of Biology of the Southern Seas, the National Academy of Sciences of Ukraine
7
10.1615/HydrobJ.v38.i2.10
S. M.
Ignatyev
Institute of Biology of the Southern Seas National Academy of Sciences of Ukraine Sevastopol, Ukraine
Main results of the study of zooplankton in the northwestern pan of the Indian Ocean carried out by the Institute of Biology of the Southern Seas, the National Academy of Sciences of Ukraine, are presented. The species composition and distribution of communities of zooplankton in the northwestern part of the Indian Ocean are rather constant, which is conditioned by the peculiarities of regional hydrology.
Macrophytes and the Benthic Fauna of Water Bodies in the Estuarine Region of the Vita River
11
10.1615/HydrobJ.v38.i2.20
S. A.
Afanasyev
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
G. A.
Karpova
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
N. G.
Pankova
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
O. G.
Kurilenko
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
Structural characteristics of zoobenthos and zooperiphyton communities, the floristic composition and phytocenotic structure of aquatic vegetation, and peculiarities of the plant cover, were studied in various water bodies of the estuarine region of the Vita River (the right-bank tributary of the Dnieper River). It has been found that the mentioned communities are highly diverse in their species composition, whereas the intensity of their development is also rather high.
Influence of Zoobenthos on the Release of Phosphorus from Bottom Sediments into Water in Lake Biotopes
13
10.1615/HydrobJ.v38.i2.30
T. V.
Zhukova
Scientific Research Laboratory, The Belarus State University Minsk, Belarus
V. A.
Babitskiy
Scientific Research Laboratory Belorussian State University Minsk, Belarus
The influx of phosphorus through the "bottom-water" interface was measured in the experiments using both intact columns of bottom sediments and the columns inactivated with the solution of formaldehyde. The total influx of phosphorus in various lake biotopes ranged from —4.6 to 74.4 mg P/m2·day. The contribution of the biotic component to the total influx of phosphorus accounted for 22—86%. The intensity of phosphorus influx is conditioned by such factors as temperature, porosity of bottom sediments, and the numbers of the infauna. Under natural conditions, the calculated coefficients of phosphorus release ranged from 3.1·10—6 to 92.5·10—6 cm2/sec. They were 1.5—25.0 times higher than the standard value of diffusion.
Macrozooplankton in Epipelagic Sound-Scattering Layers in the Areas of Frontal Zones of the Central-Eastern Atlantic
8
10.1615/HydrobJ.v38.i2.40
S. M.
Ignatyev
Institute of Biology of the Southern Seas National Academy of Sciences of Ukraine Sevastopol, Ukraine
In the epipelagic sound-scattering layers of tropical and equatorial frontal zones of the central-eastern Atlantic, 85 species of macrozooplankton have been registered. This plankton fauna was homogenous within the water area under study. A large-scale variability of distribution of macroplankton in that region of the Atlantic is provided mainly due to the maximal numbers and biomass formed near the frontal zones. The changes in taxonomic, dimensional, and trophic structures of macrozooplankton being under the influence of these zones are described.
Food Consumption Rates in Marine Planktonic Copepods (a Review)
14
10.1615/HydrobJ.v38.i2.50
G. A.
Finenko
Institute of Biology of Inland Waters Sevastopol
The data on the in situ ingestion rates in marine planktonic copepods (Copepoda) in different regions of the World Ocean are discussed. The allometric equations were developed and applied to estimate 24-hour rations of 32 species of copepods within the temperature range of (-1) — (+22)°C. Under natural conditions, the rations are in proportion to the phytoplankton concentrations, although the factors determining the upper limit of food consumption by copepods (satiation) remain unknown. The equations to describe the feeding rates at the temperature ranges of 8—15°C and 15—22°C in the laboratory experiments are suitable also for analyzing the data obtained on naturally fed copepods.
Lipid Peroxidation and Antioxidant Protection in Fish (a Review)
16
10.1615/HydrobJ.v38.i2.60
Yu. V.
Leus
Chernigov State Pedagogical University, Chernigov, Ukraine
The article presents a summary of the data characterizing the levels and development of lipid peroxidation (LP) and activity of the cellular antioxidant protective system in fishes, including that in their ontogeny and under action of ambient factors. An attention is given to the possibility of purposeful (artificial) influence on LP.
The Activities of Enzymes of the Main Pathways of Carbohydrates Oxidation in Fish Tissues
10
10.1615/HydrobJ.v38.i2.70
I. V.
Emeretli
Institute of Biology of the Southern Seas National Academy of Sciences of Ukraine Sevastopol, Ukraine
O. S.
Rusinova
Institute of Biology of the Southern Seas National Academy of Sciences of Ukraine Sevastopol, Ukraine
It is stated that activities of glycolysis and the Krebs cycle in the tissues of Black Sea thermophilic fish species rise at the seasonal periods of the annual cycle when the vital activity as a whole increases. The pentose phosphate pathway is more active in wintering. It is shown based on our original and literature data that correlations exist between glucose-6-phosphate dehydrogenase, lactate and succinate dehydrogenase activities in the liver, red and white muscles, and the natural mobility offish species.
General Characteristics of the Main Types of Shallows in the Ivan'kovskoye Reservoir under Present-Day Conditions
8
10.1615/HydrobJ.v38.i2.80
V. D.
Kazmiruk
Institute of Aquatic Problems Russian Academy of Sciences, Moscow, Russia
The pattern of higher aquatic vegetation in the Ivan'kovskoye* reservoir, built in the upper quarter of the Volga almost seventy years ago, is considered in detail. The species composition and distribution of the hydrophytes are analyzed while taking into account the features of weather conditions and hydraulic events peculiar to this reservoir.
Influence of the "Medvezhye" Gas Deposit (the Western Siberia) on Phytoplankton of Adjacent Water Bodies
6
10.1615/HydrobJ.v38.i2.90
F. B.
Shkundina
Bashkiria State University Ufa, Russian Federation
Phytoplankton communities characterized by the absence of Bacillariophyta were registered in the studied water bodies located in the vicinity of the "Medvezhye" Gas Deposit in the Western Siberia. Most of the found species belonged to stenobiotic organisms. The same pattern was registered in the Belaya river heavily polluted by sewage.
Daily Fluctuations in the Composition of Dissolved Organic Matter of Cultural Media of Algae and Cyanobacteria
14
10.1615/HydrobJ.v38.i2.100
N. Ya.
Tyberkevich
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Daily dynamics of the composition of dissolved organic matter of cultural media of some species of Cyanobacteria and algae were studied at different stages of their growth. It has been found that daily fluctuations in the composition of dissolved organic matter of cultural media of phototrophic organisms were conditioned by their physiological activity. The most clear-cut fluctuations were registered during the exponential phase of culture growth. The content of the main components of dissolved organic matter of cultural media of Cyanobacteria and algae changed not only during the whole period of their growth, but also during a day. In this case, the intensity of the main physiological processes also changed. The most significant daily fluctuations were registered in the composition of carbonic acids and phenols.
Species Composition and Numbers of Halacaridae: Acari in Odessa Bay
6
10.1615/HydrobJ.v38.i2.110
M. V.
Gelmboldt
Odessa branch Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, Odessa, Ukraine
A total of nine species of Halacaridae belonging to seven genera was found in the coastal zone of Odessa Bay as a result of investigations carried out in May-December 1995-1997. They were found to be associated with particular types of substratum. In the 1990s as compared to the 1970s, the number species of Halacaridae decreased from 17 to 9. The results obtained suggest that recreation load on the marine ecosystem is rather intensive.
The Composition and Spatial Structure of Coastal Fish Communities in Western Africa (Guinean Region)
15
10.1615/HydrobJ.v38.i2.120
G. V.
Zuev
Institute of Biology of the Southern Seas National Academy of Sciences of Ukraine, Sevastopol, Ukraine
The spatial or territorial connections between different species of bottom fishes on the shelf and continental slope of Guinea was investigated. The Czekanowsky - Sorensen index of association was used for the comparative estimation of interspecific connections. Four spatial separated groups inhabiting different types of bottom sediments were determined. The biotopic difference between fish communities is connected with their food specialization.
Mass-size Structure of Mytilus galloprovincialis L. Populations on Carriers during the Annual Cycle
6
10.1615/HydrobJ.v38.i2.130
T. P.
Kondratyeva
Karadag Nature Reserve National Academy of Sciences of Ukraine, Kurortnoye, Ukraine
L. P.
Astakhova
Karadag Nature Reserve National Academy of Science of Ukraine, Kurortnoye settlement, Crimea, Ukraine
L. M.
Rudenko
Karadag Nature Reserve National Academy of Sciences of Ukraine, Kurortnoye, Ukraine
V. I.
Lushchak
Karadag Nature Reserve National Academy of Science of Ukraine, Kurortnoye settlement, Crimea, Ukraine
The mass-size structure of a mussel population (Mytilus galloprovincialis L.) from collectors (hydro-biotechnical constructions) located in Karadag (Eastern Crimea) was studied. Individual peculiarities of collectors' overgrown, the increase in biomass, shell mass, body mass, and population's age structure depended on the duration of exposure of collectors in the sea. Two well-expressed peaks, characterizing the increase in the total mass of mussels, were determined; on that base, the optimal harvesting dates were recommended.